UNIT 3
QUANTITIES IN CHEMICAL REACTIONS
WARNING: DOING HOMEWORK MAY LEAD TO HIGH MARKS
To ace this course: Do the worksheets, practice tests, practice quizzes, and textbook problems. Homework checks will be done when you least expect it!



Lesson

Topic

Text Reference

Homework

Handouts/ Links

& Memo's

1-October 19
- Significant figures, accuracy, precision
p. 17-22
Sect. Rev.
p. 18 #1-2
p. 22 #3
p. 24 #1-6
Pg. 29 #1-13


- Scientific notation
p. 660-661
p. 661 # 1-2

2-October 20
- Isotopes & average atomic mass
p. 162-170
p. 167 #1-4
p. 169 #5-8
Average atomic Mass Calculations
(worked through examples)
Teacher Notes:



Sect. Rev.
p. 170 #1-4

3-October 21
- The Avogadro’s Constant and the Mole
p. 171-175
p. 174-175 # 9-12
The Green PEA STORY (A MOLE OF PEAS)

Class Handout:


- Moles à# Particles
p. 175-177
p. 177 #13-18


- #Particles à Moles
p. 177-178
p. 178 #19-22



Sect. Rev.
p. 179 #1-10

4-October 24
- Molar Mass
p. 180-184
p. 184 #23-26


- Moles à Mass
p. 184-186
p. 186 #27-30


- Mass à Moles
p. 186-187
p. 187 #31-34

5-October 25
- Calculations involving mole concept
p. 189-192
p. 190 #35-38
p. 190 #39-42
QUIZ REVIEW (to practice for your quiz)

Helpful Links:
Molar Conversions:
http://www.fordhamprep.org/gcurran/sho/sho/lessons/lesson92.htm
or-
http://en.wikibooks.org/wiki/General_Chemistry/Stoichiometry#Molar_Calculations (first 3 paragraphs)


Sect. Rev.
Ch. Rev.
p. 192 #1-6
p. 193-195

6-October 26
- Quiz




- Percentage Composition:
  • Law of Definite Proportions
  • % Composition of a compound
p. 198-206
p. 198-199
p. 200-294
p. 201 #1-4
p. 204 #5-8
(Teacher Notes)
(yesterdays homework answers)


Sect. Rev.
p. 205 #1-8


- Empirical Formula of a Compound
p. 207-214
p. 209 #9-12
p. 211 #13-16
(Teacher Notes includes hydrates)


Sect. Rev.
p. 214 #1-8

8
- Determining the Empirical Formula of Magnesium Oxide Lab
p. 212-213


PRELAB! Must hand in prior to entry into class tomorrow! OTHERWISE YOU WILL NOT BE ALLOWED TO PARTICIPATE IN LAB!
9
- Molecular Formula of a Compound
p. 215-218
p. 218 #17-20
(print for your own reference)


Sect. Rev.
p. 218 #1-5

10
- Finding Empirical & Molecular Formulas by Experiment
p. 219-222
p. 221 #21-22
(fill in the blank)

- Hydrated Ionic Compounds
p. 223-228
p. 225 # 23-25
(fill in the blank)


Sect. Rev.
p. 228 #2, 6-7



Ch. Rev.
p. 229-231 (select. Probl.)

ANSWER KEY TO HOMEWORK (as requested)
11
- Introduce Stoichiometry (part 1)
p. 223-240
p. 237 #1-3
p. 238 #4-7
p. 240 # 8-10
(teacher notes)
PLEASE NOTE: Corection to MOLE MOLE STOICHIOMETRY:
QUESTION #4, 5 and #6
#4 answer on yellow sheet should read : 0.38 mol
#5 should read answer: 17.5 mol,
and #6 should read 0.0453 mol. Make your changes, please.
12
- Finish Stoichiometry (part 2)
Gizmo Exploration
(do this friday-sunday from school or home)
p. 241-250
(Indepen. study)
read pg. 251-259 and make notes.
p. 244 #11-14
p. 246 #15-18
p. 248 #19-22
GIZMO EXPLORATION
Instructions how to access online classroom for limiting reagent lab.

For those who do not have a computer, let me know and I will
supervise any interested students at lunch tomorrow across from
the third floor.
PRINT AND COMPLETE

after you complete the above worksheet, there will be a few questions when you
scroll down form the gizmo. You need to submit assessment questions
electronically.


Sect. Rev.
p.249-250 #1-7

13
- Limiting reactant
p. 251-259
p. 254 #23-26
p. 256 #27-29

Booklet with examples: limiting and excess reagent type problems



Sect. Rev.
p. 269 #38-40

14
- Percentage Yield
p. 260-270
p. 262 #31-33




p. 264 # 34-37


(Percentage Purity)
Sect. Rev.
p. 270 #1-3

15
- Quiz: Stoichiometry




- percentage yield lab
p. 266-267

Percentage yield lab has been resumed and will be doing it monday.
16
- Unit 3 Review
p. 271-273

(!!!practice test and review guide)
17
- Unit 3 Test: Chemical Quantities



(answer keys)